Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8900702 | Artificial hair and wig using the same | Yutaka Shirakashi, Takayuki Watanabe, Nobuyoshi Imai, Akemi Irikura | 2014-12-02 |
| 4970042 | Synthetic fibers having uneven surfaces method for melt-spinning | Hiroshi Kakiuchi, Setsuo Fukuhara, Michinobu Fujiwara, Hiroshi Maeda, Yutaka Shirakashi +3 more | 1990-11-13 |
| 4792489 | Synthetic fibers having uneven surfaces and a method of producing same | Hiroshi Kakiuchi, Setsuo Fukuhara, Michinobu Fujiwara, Hiroshi Maeda, Yutaka Shirakashi +3 more | 1988-12-20 |